20 lines
618 B
Scheme
20 lines
618 B
Scheme
#lang scheme/base
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(require (for-syntax scheme/base scheme/require-transform))
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(provide matching-identifiers-in)
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(define-syntax matching-identifiers-in
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(make-require-transformer
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(lambda (stx)
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(syntax-case stx ()
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[(_ rx spec)
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(regexp? (syntax-e #'rx))
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(let-values ([(rx) (syntax-e #'rx)]
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[(imports sources) (expand-import #'spec)])
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(values
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(filter (lambda (i)
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(regexp-match? rx (symbol->string
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(syntax-e (import-local-id i)))))
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imports)
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sources))]))))
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